I just Can't STOP

In the lift, one guy said to his friend, "U know what, U r allowed to smoke here. There is no sign...hahahhahah". He said very confidently.

His friend said : "Hish...NO la...U can see there. That sign shows that we cannot smoke in the lift".

That guy said again after a few second n after not laughing anymore when his friend pointing directly to the sign : "That sign is the old one and cannot be used anymore"...

Me, myself n I (speaking loudly in my heart) : "Ur T-shirt(university's logo) remind me that U r intelligent enough to think whether it is wrong or not to smoke in the lift. Here I want to give U some thought of my mind. Actually U r totally wrong."